"O-of course not!" Manabu declared, looking troubled by the concept. Why would he do that?

Well, aside from if she were being bratty, but...but that's not the case!

"But...Wouldn't it make you happy to come up with a name of your own? Not a lot of kids get that chance." He tilts his head, looking hopeful. "I bet it could be fun. You could try different kinds until you find one you like, and--oh--"

A stray sock, rustled by the girl's folding, falls off the bunk and Manabu reaches out to catch it, holding it up for her.